miller



PDM E ,L L I M S. T d. d 0 M o W SLATTBD APRON GONVBYBR.

110. 123.0691l Patented Mar. 11, 1890.-

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vei...i\."r"rncantanti u ce reverent:

erncrrrcafrrou forming part or nettet tentent no. seance, aerea nieren i1, ieee.

Appleman ned november 18.1889. )sein no. 330,879'. fino nia-iu.)

Be it known that l, 'lHoMns SPENCER'Mir.-l

' LER, a citizen of the United States,'residing at Brooklymn the ccunty of Kings and State of New York, have invented certain new and useful lmprovements in Slatted-Apron Conv veyers, of which the following is a specifica# tion:v v

My invention relates to improvements in those apronv conveyers which are used for handling sticky material; and itsobjects are j .to facilitate the dischargeof the 'maieriah stiffen the conveyer-slats, and permit the use of' larger and stronger belting than could ordinarily be employed'with the/limited diameters of Wheelsoften required. l attain these objects loy the arrangements illustrated?ein l the accompanying drawings, in Whichusing my device.

' of 'theo head-Wheels,V

Figure l is a side elevation of,` a conveyer Y u e Fig shows a cross-.section ci the slats and scraper at thedischarge end of a conveyer, as if the apron were *cut transversely to theslats atsome' such line as :r :C in .Fig.'3, illustrating jin. the background the attachment portions of the links and one Fig. 3111s av perspective 'Y vievv of a shortsection c of a slatted apron tn smg myV device, and Fig. 4 illustratesb the adaptation of the attachment-link to use With thecurved slatf,V 7 .1 g

'Similar letters referto simil-ar parts through- -Thccon-veyers are coI-nposed oftwo strands of linked belt' connected by slats, and the each slat.

- VslatsSS are fastened.

' conve-yer. 50

each. pair of belts( and; vi'he'els and one end of L L are links offthe beltingtto 4vvhich the 'A' in Fig'. l is the nearer, one of .thepairlof i v .head-wheels ofthe conveyensuitably mounted' :on shaft d. A! in Fig.- 2'is the farther wheel .i of the pair'on VVsame shaft a.

Bis oneof the tail Wheels, `on shaft ,5.

suitably mounted v Cisia'chute veyer.. i H is a 'hopper receiving the load from the K is a scrapei suitahly located andsup ported for 4cut-tingrcr seraping'o Whateverl The slatted material maynot discharge freely perl-l.: i

min Fig. y link'lZ, made convenience ln the construction of in attaching the slat.

conveyers into hop- Llis the attachment. portion of the with curved u'pper surface for forhandling sticky materialssnch as tempered clay been made to use rubber or other so that Scrapers could loe the material from the conveyer charge end. These conveyers for tile and brick manufacture-efforts Ahave quired for use in limited spaces, and fiat belts running Aover small pulleys gave con siderarhleV trouble from slippaga'and the belts themselves Were of such materi. der the influence of the'mol'st-ure.'

The substitution of slatted-apron conveyers i composed of linked metallic belts connected by Vslats j and running partially overcame thediiiiculties7 tive. motion Wassecnrerh even smallvvheels, and the slats couldb'e composed of a durable material.

straight. or fiat lapping,' and under the strains of these'slats Were'often lient so them to interfere with each vconveyers were I made with slats either. abutting or overaronndthe head and foot of the conveyer.

jl/Vhen the slatswere arranged sothat each overlapped the one behind it to prevent their' catching on thescraper at the discharge end, `trouble was experienced with the materialln some of its conditions Working into ings betweenthe slats inpassing head` of the conveyenand accumulations of this sort would prevent thel slats coming together again -o'n the straight runs o veyer; and thus occasion more and more leakage lthrough tl1`e apron;

face presented to polygonal rather than cylindrical.-.

pitch-linksvvere used,so as to inc number of'slats in the slats could not be scraped clean, ,as the surthe scraper was prismatic or' j i l f come these difcnlties as fa'rvas possible,s'l1ort delivering the load` to lhe con- ,f

the head-shaft and render less acute the anf gle of each lslatjvitlr the oneA next decrease' the openings `loetween ov slats. 'Short pitch-links, however,

fiat belts, o employedto-free at the diswere often rel as to rot .out soon nn- 7o over sprocket-Wheels 1 as a posiwith the use of the loadsmuch astocause otherir passing 80 85 theop'en-'- around the f theccn-i 9o' furthermore,` the To over 9 rease the' limited space around,

t0 itand Iooerlapping l are' made of comparativelylight material, ,While these conveyers are frequently wanted for/Work requiring strong belts. Y

In the practice of -my invention I employ slats with the upper surfaces curved substantially to suit the size of wheels used; so that the apron inpassing aro-und the head of the conveyer practically presents 'a smooth cylindrical surface easily scraped or cut clean',y while at the same time inthe case of metal slats the Vcurving or corrugating of the slats,

mits the employmentof longer pitch-links,-

very -materially stiens them rand enables V, them to carry heavy loads Without bending.`

I have found that by placing one edge of each slat with the line of the edge coincident with theaXis of articulation of the links and letting the other edge project under the ad` jacent slat I practically secu a conti-nuous .surface with little o1 no opening' between the slats for accum ulations orleakage in any relative position, whatever may be'the angle between the slats, for the line of contact is constant and the partial revolution or hinging of the slats with reference to each other is al- Jvayls around this common central line of con- The above-described arrangements enable me to use broad slats, each of which may occupy, for instance, au eighth or a sixth of a cylinderwhose diameter is practically equal to the pitch diameter of the head Wheels of the conveyer. The use of broad slats per- Which-in turn' can be `made stronger tha short pitch-links, and the conveyers may thu be adapted to places where they could not be for'e be used, While their efciency is increase in ordinary locations.

K It is evident that the objects of my inver tion could be obtained `by the use of slat composed of other material than metal, ani that the shape or style of linked belt and at tachment-links may be varied. The applica tion of my invention is also unaifected by th question Whether the apron is supported b] carrying idlers or rollers or slides on carrying Ways or is allowed to hang Without support Having thus fully described my invention what I claim, and desire'to secure by Letter: Patent, is

1. In a slatted-apron conveyer, slats with upper surfaces. curved substantially to the circleof lthe circumference of the wheels al the discharge end, in combination with 'a scraper for removing adhesive material, substantially as described.l v

2. A slattedapron conveyer provided with curvedslats having their .lines of contact coincident Witlr the lines of the axes of articulationof theirrespective links, substantially fri-ros. SPENCER. MILLER.

Witnesses: i 5 l C. D. BUTLER, y CHAs, M. NORTH. l 

